"Hammerin' Hank" Aaron spent 21 seasons with the Milwaukee and Atlanta Braves in the National League before playing for the Milwaukee Brewers of the American League for the final two years of his career. In 1999, The Sporting News ranked Aaron fifth on their "100 Greatest Baseball Players" list. He held the MLB record for career home runs for 33 years, and he still holds several MLB offensive records. He hit 24 or more home runs every year from 1955 through 1973, and is the only player to hit 30 or more home runs in a season at least fifteen times.

This March/April 1994 issue of Diamond Magazine was signed in black by Aaron. This magazine includes a JSA sticker and COA.